An elderly man teaching a youngerly child how to ride a bike. |
1611: Elderly
The word 'elder' has been around since before the 12th century, and yet the word 'elderly' wasn't used until 1611. It seems like an obvious oversight to go over four centuries before someone had the idea to add 'ly' to the end of elder to refer to old people.
Having said that, the word 'younger' has also been around since before the 12th century, and we still haven't had the bright idea to refer to young people as 'youngerly'.* I suppose George Lucas came close when he used 'younglings', but as yet no-one has yet thought to use the word 'youngerly'.
* Except me. (c) Charles Fudgemuffin.